If they’re assisting in an exorcism they’re believers. And of course psychiatry is a soft science that deals most heavily with the beliefs of the patient. If the patient believes they are possessed then that is the treatment they will most respond to. Doesn’t mean they actually are possessed. Just means that you need the brain to fix the brain.
If they’re assisting in an exorcism they’re believers.
Quite the contrary.
They are there as non-believers who have reached the conclusion that the behavior of the person in question is NOT due to mental illness.
There's been a good bit written on this by psychiatrists recently. Have you not read any of it?